Sliver-balling or roll former apparatus



Oct. 19, 1943. J. R. BEE 2,332,364

SLIVER-BALLING OR ROLL FORMER APPARATUS Filed April 21, 1941 5 Sheets-Sheet 1 FIGJ.

' \ZJ-EPH Zrafifi Z55 INVENTOR.

' x/zzw Oct 19, 1943. J. R. BEE 2,332,364

SLIVER-BALLING OR ROLL FORMER APPARATUS I Filed April 21, 1941 5 Sheets-Sheet 2 JJZFP/V 3x56- INVENTUR Oct. 19, 1943. J. R. BEE 1 2,332,364

SLIVER-BALLING OR ROLL FORMER APPARATUS Filed April 21, 1941 5 Sheets-Sheet s wx/aw Oct. 19, 1943. J. R. BEE 2,332,334

SLIVER-BALLING 0R ROLL FORMER APPARATUS Filed April 21, 1941 5 Sheets-sheaf 4 0233/ 3 FY1251? Z INVEN TOR.

SLIVER-BALLING OR ROLL FORMER APPARATUS Filed April 21, 1941 5 Sheets-Sheet 5 INVENTOR.

Patented Oct. 19, 1943 SLIVER-BALLING on Roi IL :E ORMER APPARATUS Joseph Ryder Bee, Leeds, England, assignor to Fairbairn Lawson Combo Barbour Limited, Wellington Foundry, Leeds, England,' a corpo -L ration of Great Britain Application April- 21, 194ij Serial No." gate I In Great BritainQctoberlZ, .1940;

3 Claims. 01.19 158) This inventionrelates to sliver balling or roll forming apparatus-in which the ball or roll hereinafter referred'to as roll is formed betweena pair of discs upon a toothed centre,or centres,

I the discs being free to revolve with the rollas the latter is formed; To build a firm and solid-roll a toothed pressure Wheel is employed which initially' engages the toothed centre or centres and drives the latter and subsequently engages the peripheral portionof the roll as thelatterincreases in diameter and drives it by friction. The

toothed pressure wheel is mounted on a lever that is free to swing upon a shaft on which is fixed a gear wheel'that drives the toothed pressure wheel. Arranged in rigid connection with the lever is a brake drum arrangement comprisin one or more brake drums and brake bands which resist the backward movement of the lever a the roll increases in diameter. The brake band or bands can be'adjuste'd to determine the pressure between the pressure wheel and the roll but it has been found that while thi pressure is sufficient to ensure a solid centre to the roll, it is necessary to increase the pressure to some extent as the roll increases in-diameter so as to 'maintain a solid wellbuilt roll throughout and up to the maximum diameter.

According to this invention an appliance is provided which comes into operation shortly after the commencement of the formation of the roll and gives an additional pressure to the pressure wheel as the roll increases in diameter and until its full size is attained.

This appliance may be additional and give an increasing additional pressure to the pressure wheelas the roll increases'in diameter until its full size is attained. a

In' the accompanying drawings-- ,''Fig. 1 is a side viewof. part of a sliver-balling or roll forming machine provided with means for giving an increasing pressure to the pressure wheel in accordance with this invention.

Fig. 2 is an elevation of the back of the machine shown in Fig. 1.

Fig.3 is a section taken on line 3-3 of and drawn to a larger scale. 7

Fig. 4 is a view of the brake shaft assembly in section, and

Fig. 5 is a View looking in the direction of the arrow 5 in Fig. 2, of the band brake and builder Fig. 2

wheel return motion in position just as the band brake is bein released. H I a A indicates the roll that is formed upon a pair of retractable centres B which project through and meet together betweentwo spaced discs, not

shownjwhich revolve with the roll as fthe latter is being. formed. :0 indicatesthe toothed pres sure wlieel"whi'ch initially gearswith. rounded teeth .on the retractable.'centresiand drives'the latter, and subsequently engages. the peripheral portionof'the. roll A and drives it"bfy friction.

Thepressure] wheelC is freely mounted upon a pin '0 secured between two arms of a double armed fl'ever D, Fig. 4.,ftnatis fixed on a shaft E and is driven byfgea'ring from a wheel e freely mounted on theshaft Mounted onthis-shaft is one; or

in some cases two brake drums F; each provided with a'brake band G which resists thebackward I movement of the lever D as the roll increases in diameter, the brake. drums being firmly attached to the lever, D by. screws preierably three for each brake drum." In Fig. 5 oneend of the brake band is attached to a screw'g that is encircled by a spring 0 and passes through a fixture'tg? and is provided with a nut '9 for adjusting the, ten- .sion f the .band. Theother end is attached to" the short arm of a lever 91 of which the long arm carries a runner g? that. is adapted to be act'ed uponby aicam g ifixe'd on a cam shaft Xg The mechanism above described is wellfknown and constitutes no part of the present invention; 9

I To give an additional pressure to the, pressure wheel C which will come into operation shortly after the commencement of theformationof the roll and increase as the roll increases in diameter,

two chains H are attached toa casing .d that is I attached to the arms D and act'sas acover for the wheel e. These chains are attached to the casing at a point opposite to each leverarm D and carried around and fixed to ,two.,sprocket;wheels' "n (Fig. 2) fixed on a sleeveh thatfis rotatableon a shaft in? 'carriedby a two-armed bracket. k that is attached t'oth'e machine frame. ,Rigidly connected with' the sprocketwheels h i a sprocket wheel it to whichpis attached .one. end of a chain 72 The otheruendvof this chainfis taken round andattached to. ascroll orfus'ee 71.

that, isarranged in rigid connection wit'ha spring Ibox J. This springibox isrotatable .upon ja shaft K carried by a pair or .a'rmsL; M which. are arranged in rigid: connectionwith .one another and are fired'on'a shaft Nthat isrotat'able in bearings-n (Fig; 3 fixed to them'achine frame, The

free end of the arm L is formed with aslotl for a stud 1} that can be fixed in an'adjustedposition along such slot by anut l and mounted on the stud :isthe lower. end of one link ,Oofha pairof links 0, O that arehin-gedtogether on a stud o (Fig. 2) on which is freely mountedaf runnero he er at m were 91.18 suspended r m othcr and the arms L, M are prevented from rising due to a pull on the chain n Situated within the spring box J i a volute spring (Figs,

2 and 3) that has its outer .end; attached it'D the inner peripheral portion of the spring :box and its inner end attached to a boss 7' that is fixedn;

on the shaft K. The boss ,7 can be turned for the plate 3' can be clamped to.a *face I on. the .armL after it'has been turned toadiustthe tens'ion or the spring. EFixed on the shaft N is a tional pressure'exertedby the chains-H,.h on the .pressure wheel-C is instantly removed immediatellyuthe snail .cam P commences torevolve and in order tojbiiing the arms back to their normal position with the bottom edge of the arm Mresting ,on .the-screw'R .andassist in returning the links O, .0 to .th'e'irnormal position a spring S i attached to the ."free end m of the arm M and by means of an adjusting screws and a pair of adjnsting nuts s2 to a bracket'T fixed to .the machine ifrnme.

At the commencement of theiormation .of the roll, the pressure wheel 1C i in gear with the "toothed .cen'tres ,B, the .chains H, 'h are practically free from tension, and the snail cam P is 'inits normal position 'andsupportingthe jointed 1 links 0., O in the manner described. When the pressurewheel has been moved 'a predetermined distance away from the toothed centre the chains lbecome taut, but "owing to "thejfact that 'thesna il cam andjjointed links preventthe arms L, M which carry the spring box J from .rising, the latter is.slowly turned against the resistance of the volute spring 'y'and the scroll onwhich'the chain 7: (is winding gives an additional pressure t'ojthe pressure 'wheel -which increases gradually as 'thejroll increases in diameternntil Ithefull di- ,;arneter of the roll has been'atmlned. A'relea'se motion which is not shown andinrms no part 'of the present invention then comes into operation and causes the cam shai't X carrying the snail cam to make one revolution.

When the snail'cam commences to revolve, the point of the cam travels past the'runner 0 '0n the Jointed links which 'then collapse inwardly towards the camshaft-and allow the arms carrying thespring Fbc'xto rise and-thus release the pressure on the chains and also the additional pressure fOI'l the pressure wheel. "During this period while the'additional pressure -is-released, other cams on the camshaft come into operation to 're- 'tractthe .t'oothed :centresand allow the completed roll to fall away. The toothed centres are then immediately closed by'their operating cams and "the snail camP forces lthe leverf'D forward until In this position the two the pressure wheel 0 comesinto gearwith there- 75 connected with the spring box, a

sprocket wheel arrangement, a chain connection tractable toothed centres B. A known form of mechanism for doing this consists of a connecting rod p, Fig. 5 formed with a forked end 29 that rests on the cam shaft X and is fitted with a runner 10 that is adapted to be engaged by the cam P. "The connecting rod 29 is pivoted to an arm p that is pivoted at p to the double-armed lever D. The arm p acts against a laminated spring p that is firmly fixed to the lever D.

"twhen the pressure wheel C comes into gear with the toothed centres B the spring 30 yields slightly and ensures very firm contact between the wheel 'C and centres-J3 and so enables the sliver to be caught firmly for the commencement of the new EGOi1, the slight yielding of the spring also ensures that no breakages occur in the teeth of the gears.

adjusting the tension of the voluteispring. For :FSimHltaHBOHSIY With is p ra i n he brake this purpose a plate 7' is fixed on the shaft K ou't-' side the arm L and formed with concentric slots 5 y (Rig 1) forboltsor screwsa' by means of which v beejected. This mechanism forms no part of the present invention and is merely included for the purposes of explanation. As the snail cam resumes itsnormal position it bears against the runner 0 on the jointed links 0, O and moves them back to the position previously described.

'VVhat Lclaini as my invention and desire to secure by Letters Patent in the United State is:

1. In a machine for forming a roll of sliver upon-a centre, a pressure wheel for rotating the roll, a braking appliance for causing the pressure wheel to exert a uniform pressure thereon, "a spring arrangement for causin the pressure wheel to exert an additional pressure on the roll as the roll increases in diameter, means for energizing-the spring as the roll increases in diameter and means for releasing the spring pressure when 3 the full diameter of the roll has been attained.

'2. In a machine'for forming a roll of sliver upon -a centre, a pressure wheel for rotating the roll'and exerting pressure-thereon, a pair of arms between which the pressure wheel is freely mounted, a shaft rigidly-connected with the pair pressure wheel, a pair of pivotally mounted arms,

a'shaft 'rigidly'fixed to such arm and extending between same, a spring box rotatable on the shaft, a volute spring situated in the box and connected to the shaft and to the box, a fusee rigidly rotatable between the fusee and the sprocket wheel arrangement, a chain connection between the sprocket'wheel arrangement and the brake drum *arrangemenh'a pair of jointed links connected at one end to one of the pair of pivotally mounted arms and at the other end to a fixed anchorage, and a movable support capable of maintaining the jointed links in a position in which they are slightly out of line with one another and of assuming a non-supporting position when the full diameter of the roll is attained. l

3. In a machine for forming a roll of sliver upon a centre, a pressure wheel for rotating the 'roll and exerting pressure thereon, a pair of arms between which the pressure wheel i freely mounted, a shaft rigidly connected with the pair 'of arms, a brake drum arrangement rigidly connected with the shaft, gearing for rotating the pressure wheel, a pair of pivotally mounted arms,

nested at one end toone of the pair of pivotally mounted arms and at the other end to a fixed anchorage, a runner carried by the jointed links, a cam against which the runner is adapted to bear and support the links in a position in which they are slightly out of line with one another,

adjustable stops for limiting the amount of up-v ward and downward movement of the pair of arms and mean-s for exerting a downward pull the sprocket Wheel arrangement and the brake 10,,upon the latter.

drum arrangement, a pair of jointed links con- JOSEPH RYDER BEE; 

